The Smell of the Grease Paint is one of the side missions available in Red Dead Redemption 2. Arthur can help Marjorie twice - the woman is traveling around the world with her troupe and making performances.
Head to the quest marker presented on the map - it appears in the saloon in Van Horn Trading Post. This place is located in the eastern part of the map. Van Horn is located north from Saint Denis and south from Annesburg.
Speak with Marjorie in the saloon. This initiates a fistfight with Bertram. He is a more challenging enemy so use dodges and blocks.
The second part of the missions requires you to find Magnifico. His camp has been marked on the map - it is located south-west from Van Horn.
Speak with the man. After that Magnifico will start to run away. Don't use your lasso - the chase sequence is scripted. Follow the colorful clouds (check the mini-map if you get lost). The chase sequence has a few unique moments:
- Examine three "smokescreens".
- Investigate the glade.
- Approach Magnifico hiding on one of the trees (see the picture above).
The chase ends when you avoid the train. This mission is over, BUT you can complete an optional step by visiting Saint Denis and watching the troupe's performance. After that, you can collect your share from the sold tickets.